<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        var som = {
            '0': 1,
            '1': 3,
            'length': '4'
        }
        var lest = Array.from(som, item => item * 3)
        console.log(lest);
    </script>
</body>

</html>